Gemstone



FIG. 1 is a top plan view of the gemstone showing a new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a side view thereof taken at 45 degrees from the right sideview of FIG. 2; and,

FIG. 4 is a bottom view thereof.

The ornamental design for the gemstone, as shown and described.